Printing press



June 27, 1933. G. M. PORTER PRINTING PRESS Filed June 8, 1931 2 Sheets-Sheet 1 IVEN TOR. flea e jllparzer M V A TTORNEY G. M. PORTER PRINTING PRESS June 27, 1933.

2 Sheets-Sheet 2 Filed June 8, 1951 w 5H H E IN VEN TOR. MPar/er A TTORNEY NN WW 35 tating the application of distinct sections,

{ sistencies by a single impression.

Patented June 27, 1933 r A UNITED (STATES PATENT OFFICE I l i moms mar nas, on NEW y v i 4 m m P Application filed June ii, 19 31. Serial No. 542,766.

The present invention relates to Whatv is sions or recesses, corresponding also in numknown as fiat bed printing pressesln genher to the'd1v1s1ons of the fountain.

oral, and particularly to the inking mecha- By means of the above provisions, which nism of such presses and especially to the may be varied, asto their number and ar- H construction of such lnk ng mechanism. rangement depending upon the necessary rew According to the present inventiony-the quirem ents for diiterent types and sizes of paper stock an be either doubled, tripled, Work and of presses, it is madepossible to or quadrupled, in size desired accordmgto transfer different colorings simultaneously number f colors t b printed in the upon the type or the form fromwhich the i one operation and all colors run in one form inl: is transferred to the sheet to be printed. thus filling the press to'capacity and then Another object of my invention is to proturningthe sheetsaround and prmting again vlde n connection with a flat bed, cylinder for one color to interlap into theother; By printing press equipped with reciprocating,

the methods at present in use, the press could scctionally divided-distributing rollers, suitb run to capacity by mult plylng the able meansjwhereby, the divisions" of such number of electrotypes for each color and rollers may beeliniinate'c'l, so thatsuch disrun each color separately, but the cost of tr butmg rollers assume the appearance of the additional electros for eachicolor and the and become, to'a-ll intents and purposes, conlockingiup of larger or capacity for1ns, the' tlnuous solid distributingrollers, makerea dy and the registering of a greater Another obgect of myinvention is to pronumber of electros become prohibitive and V1616 111 connectlon With the divided inkplate therefore rather small sheets are handled. a f a letterprintlng press means'vvhereby th According to the present invention any 6083588 O f k p a e may be filled at will M single color letter press can easily be 0011- SO as to enable the use of theplate 1n the verted into a multicolor press at a small cost, m Way as if t were made W1th a solid, and should it be desired to print only one n r pted surface, v color after the press is so converted, all the l e n QW P Q Obmln ts ink fountains may be filled with the same one Flescnbed 1 E 2 l l n' w l cut grooves Y color inkand printing maybe done as usual. 1n h coinposltlon l e for the P p of F One of the objects of this invention is to Spacmgmk ar s, b thls. P QUQ 13 ry providein connection with a flat bed cylinder costily E ti Q 3 O1I}111 Jos1t1on rollers type of printing press or in fact With any use ess or 6 next 3 operatlon 11k@- 1 Wise consumes considerable time and skill ss an 1nk1n a aratus for fac1l1- W letter g pp and alsothe groove so cut must be qultewide v Jr a a ol n of 1 u g o err-tarsrats-5;than $525 the inkin an orm r0 ers, ere y ena 1ng 1 a .7 the printi ng of a sheet in different parts of igf fi further 111,61 (lasmg t Cost O h Varlolls Colors m k of dlfierent The foregoing and stilliurtlier objects of my invention will become more fully ap- Order a mp h f results, parent from the following description and the ink fountain s d1v1ded .1nto compart the accompanying drawings, forming part ments by mean f F QO l P 9 5; of my disclosure, andalthough the same iithe ink Plate of the p e 'ln P s 15 dlvlded lust-rates an embodiment of the invention as by a number of longitudinally arranged, li d-t flat b d li d type f Printing 051 parallel recesses, corresponding in number to press, 1 1 b no means i t d d t b h that O the fountain divisions, the Steel ited to the actual shovving,and in which: ink distributing rollers, in contact with Fig, 1 is aplan View ofa conventional 'flat What is known as the form rollers or compobed cylinderprlnting press, including an em- 50 sition rollers are also provided With divibodiment otthe invention.

Fig. 2 is a cross-sectional view through such conventional printing press taken on line 22 of Fig. 1.

plate andin the steel distributing rollers.

Fig. leis a partialend elevation, in enlarged form, of a transfer roller and a distributing roller as seen when looking in the,

direction from the ink fountain.

Fig. 5 illustrates an enlarged detail View of a removable partition adapted to divide the ink fountain into compartments.

Fig. 6 is an enlarged detail cross-sectional view of a distributing roller equipped with a fill-in member. l v

Fi g. 7 is a partial cross-sectional view illustrating a fill-in member provided in the groove of the ink plate. f

Fig. '8 is a cross sectional view through an alternate form of ink plate having removable and interchangeable ink receiving sections. j i

All illustrations above enumerated are moreor less diagrammatic and are intended to serve rather for experiment I purposes than for showing structure. In the drawings, numeral 10 denotes a'conventional type of ink plate of a printing press, usually provided with a form section indicated atll an inking section 12, which latter is ordinarily provided with a smooth upper face. For the purposeindicated above, the ink carrying portion is divided into distinct'fields 13 by meansiof'dovetailed grooves 14, the number of which depends upon the number of colors or fields it is desired to be pro- 'duced for such a, press.

At theright hand end and below theink plate is arranged an ink fountain, indicated at 1 5,of conventional construction and provided with afountainroller 16 which in this case has its otherwise smooth surface provided with a plurality of grooves 17, which divide the roller into distinct portions or sections.

In engagement with grooves 17 of ink fountain roller 16are partitions 18, shown in detail in Fig. 5. The rollerv engaging portion 19 ofthe partitions is curved so asto correspond to the annular recess within the roller, while at the oppositeend there are provided attaching means 20 by which the the partitions may beeasily removed for the purpose of cleaning the fountain.

Adapted to alternately contact with foun tain roller 16 and plate 12, there is provided 7 an ink transfer roller or ductor 19 which is pivoted at 20 (see Fig. 2) and which is designed to once engage with and take ink from a roller 16-, as shown in Fig.2,in full lines,

and atthe next moment to deliver the ink to the upper surface of the ink plate, as indicated' in broken lines. This arrangement is not'new and is of conventional structure and I therefore need not be further eXplained,-since its function as transfer agent for the'ink from.

the fountain roller to the upper surface of the ink plate is well known'in the art.

Above the plate there are shown four groups of rollers consisting .of apair of ink pick-up or delivery groups at the righterid of the plate, and form-inking rollers arranged substantially at the center .of the plate;- Both groups comprise composition rollers 2'1, in contact with the plate and ink distributing rollers 22, in contact with the composition rollers. 7 preferably made of steel and are so; arranged These 1 ink-distributing rollers are that besides revolving, 'which: rotation is caused by the movement of the plate, the steel rollers are caused to reciprocate longitudi nally. This reciprocation is accomplished by an arrangement of cranks indicated at 23in,

Figs. 1 and 3.

1 It will be observed that steel rollers 22 are provided with annular recesses .24" I comesponding in number to the number of recesses Y in the fountain roller and to the number of recesses 14 provided in the inkplate. It will be" further observed that the recesses'24 are as wide as recesses 14, provided in theplate so that although rollers22 reciprocate their.

movement will not exceed the widths or. cause them to travel beyond the edges of recesses 14. l

In'near proximity of theleft hand group of rollers is provided a conventional cylin- I der 25 adapted for the delivery ofsheets'to be printed and pressed against the type coiidistributing rollers 22 may be filled by meant.

of split rings as shown in detail in Fig. 6

'andindicated at 26, as to present a smooth cylindrical surface where desired. These rings are preferably formed of two halves which arehinged together at one of their ends, as shown at 27, while the'other ends are preferably oiiset at 28 and 29 and provided with suitable locking means, whereby theyai'e held together and to the roller. Similarly,

grooves 14 of the plate have to be filled, which is, accomplished by means of dovetailed inserts shown at 30 in Fig. 7, andfwhich are;

held in the plate by any suitable means, as for instance a screw, indicated at31.

' The function of the device becomes readily evident fromthe foregoing. description. Vhen it is desired to print sheets indifferent colors or different shades, "or with inks of different consistencies, the desired number of grooves of the distributing rollers and ink plate are freed of their respective filler members, and the ink fountain is supplied with roller which is continuously in contact with Y the composition rollers. The ink isrtrans ferred through the movementof the plate from the first composition rollers to the'next group of rollers and the same operation takes placein that group,while the ink is. more 95 thoroughly spread over theplate. As-the latter continues in its travel, the ink is brought up to the first roller arrangement at the left hand end of the plate, andthrough the plate is'deliveredto the last group of' rollers. The two left hand groups of rollers deliver the ink to the form "located in the form end 11 of the press from where the ink is transferred to'the sheet delivered by cylf inder25.

Due to the fact that rollers 22 are limited in their respective movement and further due to the fact that the plate is divided 'by relatively broad recesses 1 f into distinct sections, theindividual ink groups delivered by Way of the'plate to the rollers are prevented from mixing, whereby each plate section, defined by the plate grooves and steel roller grooves, is individually supplied with its respective ink mixture and thus delivers the latter without overlapping, to the type form, and subsequently to the paper upon which the print appears. I

The foregoing description and the elucidated manner of operation of my device deal with specific forms of my invention, as shown in the accompanying drawings.

It is obvious however, that variations, modifications, improvements and changes a may be readily incorporated within my de- 55 vice, for the purpose of meeting different requirements which undoubtedly must become necessary when my idea is applied to the different types of presses, intended for lesser or greater speed, and designed for delivery of various classes of printing work. I, therefore, reserve for myself the right to make suchchanges and improvements, as may become necessary, without departing from the broad scope of my idea comprising the employment of divisions in not only the reciprocating mounted. distributing rollers, and the fountain, but. also the divisional means provided in the ink plate itself, inthemanner'and as set forthinthe annexed claims. v V

One modification that "I have found.effective is toprovide an ink plate 10a with raised'flanges on its longitudinal edges only; and provide sectional inserts 13a equal in.

thickness to the height of the flanges and of various widths but running the full length of the plate. The sections may be interchanged and moved and'adjusted to provide spaces or grooves 1.4a between them so as to line up with the division's or grooves in the fountain roller and steel rollers. I claim:

1. In an inking mechanism for printing presses, the latter including a flat ink plate, an inkfountain, a fountain roller, groups of ink-pick-up and form rollers, said group's'includingdist'ributing rollers ink fountain separating means removably associated with said fountain and said fountain roller,.said means comprlsmg rectangular grooves inthe bottom wall of the lnk fountain, correspond ing grooves in the fountain roller and partitions removably but snugly set within the fountain grooves and extending into the foun= tain roller grooves to effectively prevent c0 -min ling of the inks in the respectivecompartments formed. by the partitions, andfink separating provisions arranged with said plate and said distributing rollers. v, 2. In a printing press of the flat bed cylinder type, a plate having ink separating pro} visions, an ink fountain and a fountain roller rectangular grooves. in the bottom Wall of v the ink fountain, corresponding grooves in snugly fitting into the fountain grooves and extending into and closely fitting the fountain roller grooves to effectively p revent coinim gling of the inks in the respective compart-. ments, formed by the partitions, a plurality of groups of ink pick-up and form rollers provided with ink distributing rollers, the latter having provisions for maintaining separate, ink supplied to sections of the pick-up I and form rollers whereby different color inks are prevented from overlapping.

3. In a printing press of the fiat bed cylinder type, a plate having longitudinal ink separating provisions, an ink fountain and a l in v 105 the fountain roller, partitions removably 12o fountain roller, the former provided with reping'of difi'erent inks delivered to- Said. pick up and formrollers. v

" 4. In a printing press ofthe-fiatbed cylinder type, a plate having longitudinally are ranged dovetailed ink-separating provisions,

ers and anothergroup of form rollers in (:0-

operative relation with said plate, each of said roller groups lncludingink distributing rollers, thelatter adapted to reciprocate and provided with ink separating, annular grooves or recesses, all of said inkseparating means of sai'd plate, said fountain, said foun tam roller and'said distributlng rollers correspondlng 1n numbers to one another;

' 5. In a printing press of the flat bed type,

aplate havinglongitudinally arranged dovev tailed ink separating provislons, an ink fountainhaving a fountaln roller in operative re lation to said plate, said fountain roller prol.

videdwith annular rectangular recesses, a

plurality ofink separating partitions associated with saidink fountain and in operative engagement with" said recesses of the fountain roller, rectangular recesses in the bottom wall of said fountain, into which the partitions are snugly but removably fitted, a groupof ink pick-up [rollers and another group of form rollers in cooperative relation With said plate, each of said roller groups including ink'distributing rollers, the latter adapted to reciprocate and provided with ink separating, annular grooves or recesses, all of said ink separating means of said plate was said fountain,-s'a-id fountain: roller andjsaid eating movement does not exceed the width,

and does not permit anyover-lap of the ink beyond the edges of, saidink separating prov visions of the plate.

6. The combination with a prmtingpi'eu of the flat bedtype, ha-vinga plate provided with ink separating provisions adapted to receive removable filler means, of an, ink

fountain in cooperation with the plate and provided with a fountain roller, and ink die viding means removably secured in rectans gular grooves or recesses in the bottom ofsa-id inkvfountain, said roller: having rectangular recessesfor accommodating said ink dividing 7, Anannular recess filler for rollers fused injprinting' presses, comprising a pair of semi-circular members in hinged connection with: one another and provided with locking means forhbldingthem, together in the form ofaringi;

8..An annular; recess filler for ink. distributing rollers of printing presses, comprising a pair of hinged members adapted to. fill, when closed, an annular ink separating recess of a distributing rollers, and having interlocking ends adapted to be broughttogethef andlocked in position within such recess, so asp-to present a smooth. continuous outer surface, corresponding to the unrecessedouter surface of the roller. a

Signed at New York city, in the county and State of New York, this 29th day of May,

1931., m; a a I i 'GEORGE M. PORTER, 

